; Porsche - 356IDF REDLINE WEBER Proline Ultimate Street Performance Conversion. Replacement conversion for pre-1973 California exempted vehicles. Maintains factory crossbar, with supplied REDLINE levers. Supplied REDLINE manifold upgrade. Warranty & Technical support are only handled through the manufacture, REDLINE WEBER @ 8007332277 ext.7457. DO NOT CONTACT THE SUPPLIER FOR WARRANTY OR RETURN, PERFORMANCE APPLICATION NOT SUBJECT TO RETURN.